Originally Posted by htfan
Asked this Q earlier but no one responded, so I thought I'd try again...
1) Is frame prep different for 9mm compared to .45? (slide rail, Barrel seat etc.)
... or is it just the custom fitting of the slide to frame ...
I'm also in for a parts GB and OC/South OC build party!
IIRC, it is a matter of which parts you put on the frame after it is made. You use a different slide and ejector, but they all fit on the same basic frame. It is the same for .38 Super and .40 S&W. They all require slightly different parts that go on the basic frame.